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<base href="https://bugs.freedesktop.org/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - segfault in brw_update_renderbuffer_surface on i965 from multiple apps"
href="https://bugs.freedesktop.org/show_bug.cgi?id=61724">61724</a>
</td>
</tr>
<tr>
<th>Assignee</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Summary</th>
<td>segfault in brw_update_renderbuffer_surface on i965 from multiple apps
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>intel-gfx-bugs@lists.freedesktop.org
</td>
</tr>
<tr>
<th>Severity</th>
<td>major
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
<tr>
<th>Reporter</th>
<td>mike@vee.net
</td>
</tr>
<tr>
<th>Hardware</th>
<td>All
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Component</th>
<td>DRM/Intel
</td>
</tr>
<tr>
<th>Product</th>
<td>DRI
</td>
</tr></table>
<p>
<div>
<pre>Multiple apps are getting a segfault in brw_update_renderbuffer_surface,
including VLC, Compiz and Gazebo (which uses OGRE).
Ubuntu bug is reported here with a number of stack traces:
<a href="https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/947544">https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/947544</a>
I'll attach a complete, more recent one in a moment, but the head looks like
this:
#0 brw_update_renderbuffer_surface (brw=0x403eb30, rb=0x4510500, unit=0) at
brw_wm_surface_state.c:1109
#1 0x00007fffdc0e9ab0 in brw_update_renderbuffer_surfaces (brw=0x403eb30) at
brw_wm_surface_state.c:1205
#2 0x00007fffdc0d3b02 in brw_upload_state (brw=brw@entry=0x403eb30) at
brw_state_upload.c:498
#3 0x00007fffdc0c11a7 in brw_try_draw_prims (max_index=4294967295,
min_index=4294952344, ib=<optimised out>,
nr_prims=<optimised out>, prim=0x7fffffffc580, arrays=<optimised out>,
ctx=0x403eb30) at brw_draw.c:493
#4 brw_draw_prims (ctx=0x403eb30, prim=0x7fffffffc580, nr_prims=<optimised
out>, ib=<optimised out>,
index_bounds_valid=<optimised out>, min_index=4294967295,
max_index=4294967295, tfb_vertcount=0x0) at brw_draw.c:589
#5 0x00007fffd73a43da in vbo_handle_primitive_restart (ctx=<optimised out>,
prim=<optimised out>, nr_prims=<optimised out>,
ib=<optimised out>, index_bounds_valid=<optimised out>,
min_index=<optimised out>, max_index=4294967295)
at ../../../../../src/mesa/vbo/vbo_exec_array.c:570
#6 0x00007fffd73a53b4 in vbo_validated_drawrangeelements
(ctx=ctx@entry=0x403eb30, mode=mode@entry=4,
index_bounds_valid=index_bounds_valid@entry=0 '\000',
start=start@entry=4294967295, end=end@entry=4294967295,
count=count@entry=39690, type=type@entry=5123, indices=indices@entry=0x0,
basevertex=basevertex@entry=0,
numInstances=numInstances@entry=1, baseInstance=baseInstance@entry=0) at
../../../../../src/mesa/vbo/vbo_exec_array.c:867
#7 0x00007fffd73a5724 in vbo_exec_DrawElements (mode=4, count=39690,
type=5123, indices=0x0)
at ../../../../../src/mesa/vbo/vbo_exec_array.c:997
#8 0x00007fffd4c05124 in Ogre::GLRenderSystem::_render(Ogre::RenderOperation
const&) ()
from /usr/lib/x86_64-linux-gnu/OGRE-1.7.4/RenderSystem_GL.so</pre>
</div>
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